Lasting and nailing machine.



H. WALTHER. LASTING AND NAILING MACHINE.

APPLIOATION FILED DEC. 10, 1906. RENEWED APR. 29, 1914.

1,1 1&171 Eatented. Sept. 8, 1914.

4 SHEETSSHEBT 1,

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H. WALTHEH. LASTING AND NAILING MACHINE.

APPLICATION FILED DBO. 10,1906. RENEWED APR. 29, 1914,

1 1 1 O, l 7 1 Patented Sept. 8, 1914.

4 SHEETS-SHEET 2.

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LASTING AND NAILI-NG MACHINE. Y

APPLIGATION FILED DEO.10, 1906. RENEWED AIR. 29, 1914.

1 1 1 O 1 1 s 7 Patented Sept. 8', 191? 4 SHEETSSHEET 3.

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LASTING AND NAILING MACHINE.

APPLIUATION FILED 13120.10, 190s. RENEWED APR. 29, 1914. 1 1 10, 1 7 1 a e T 4 4 N M m 6 In L W e s u :l V

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UNETED STATES PATENT OFFICE.

HEINRICH WALTHER, OF WEISSENFELS, GERMANY, ASSIGNOR TO THE FIRM OF NOLLESCHE WERKE, ERNST NOLLE, OF WEISSENFELS, SAXONY,. GERMANY.

LASTING AND NAILING MACHINE.

Specification of Letters Patent.

Patented Sept. 8, 1914..

Application filed December 10, 1906, SeriaLNo. 347,129. Renewed April 29, 1914. Serial No. 835,334.

To all whom it may concern:

Be it known that I, HEINRICH WVALTHER, a sub ect of the King of Prussia, German the Province of Saxony, German Empire, have invented certain new and useful lmprovemcnts in Lasting and Nailing Machines: and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the. art to whiclrit appertains to make and use the same.

This invention relates to the class of lasting machines for stretching the uppers of shoes over the last and fastening the same upon the insole, in which more than one pair of pincers simultaneously come into action and diii'ers from the known machines of the Paine and'Chase system in that according to the present invention the last is placed with the sole downwardv and that the pull of the pincers is exercised first downwardly and then inwardly. The upper is positioned upon an upright last and is visible to the attendant who can thus closely observe the action of the pincers and control the stretching of the upper and avoid any displacement of it on the last.

it is an important feature of this machine that the pincer carriers are so constructed as to form at the same time the wipers on their upper surface which wipers move inward together with the pincers. These pincer carriers hold also the tack drivers, so that they uiove simultaneously inward after the upper has been stretched, and con serpiently causes the tacks to be driven into the insole always in aprecise distance from the edge of the upper. The pincer carriers form therefore not only the guides for the pinccrs. but simultaneously the upper wipers themselves, which have hitherto been constructed separately, and also themselves form the tack drivers.

The invention may be either arranged as a lasting machine with any convenient number of side and toe grippers or only as a pulling ovcr machine to be used in conne'c tion with a lasting machine, which latter completes the tacking of the pulled over shoe.

The pulling over machine is provided with preferably only two side grippers, which work together with one pair of toe grippers. The latter is preferably con- 4 Emperor, residing at lveissenfels, a. 8., 1n

structed so that it may he opened and closed by hand. The last with the upper having been placed on the toe-rest, the projecting edge of the upper is grasped by the toepincers. This done the last is pressed down until it rests upon the heel-rest. This causes the toe-part to be pulled over in practically exactly the same manner as if done by,

hand.

In the accompanying drawings the arrangement is illustrated as a pulling over machine with two opposite side grippers and one toe gripper.

Figure 1 shows a side elevation of the pulling over machine in a position of rest with the closed toe gripper shown in dotted lines. Fig. '2 is a front elevation of the machine likewise at rest with the last support left out. Fig. 3 is a horizontal section on the line AB of Fig. 1 the lower parts of the machine not shown. Fig. 4 is a vertical section on the line CD of Fig. l and shows the clutch for operating the mechanism. Fig. 5 is a horizontal section on the broken line EF of Fig. 1. Fig. 6 is-a horizontal section on line GH of Fig. 1.. Fig. '7 shows the position of the cam wheel with its two actuating grooves for the pulling over frames for imparting to the grippers an up and down and a rocking mmement respectively. Fig. 8 is a longitudinal section through the operative parts of the machine after the first stage of operation 2'. (3., after the grippers have been moved downward. Fig. 9 indicates the position of the cam grooves correspond ing to the said stage of operation.

Fig. 10 is a longitudinal section through the machine at the end of the second stage of operation, when the pincer carriers have been rocked by a frame under the insole and have laid and fastened the upper on the insole. Fig. 11 illustrates the position of the. side-grippers according to 1* 10, the front gripper not shown. Fig. 12 indicates the position of both the cam {Iroovcs of the cam wheel corresponding to the second stage of operation. Fig. '13 is a icw of the side pincers open. Fig. 14 is a view of the side pinccrs closed.

in the pulling over machine according to the present invention the margin of the toe part of the upper is at first introduced be tween the jaws of the open front grippers. 'lhcse grippers are closed after the last designed to shape the upper has been brought to bear against the toe rest. The last is thereby positioned so as to form an angle with the horizontal plane of the machine.

bed. lly ynessing down the last until its heel part lie's upon the heel rest the upper is stretched taut at the toe, just as in hand lasting, so that a warping o'lthe upper during' the operation of the side grippers is rendered p 'actically impossible. The instep is held fast by means of the instep loop, and the last is held fast by means oi holder placed over it. The leather new projects be tween the jaws of the side pincers. On pressing down a troadle the machine is started. lhis treadle worlrs in such a manner that by pressing down the treadle, the machine is turned for only one third of a revolution. then is autoniiatically put out of gear.

During the lirst third of a revolution the cam grooves cause the jaws of the ,side Pincers to close, the side and toe pincers are moved downward in their carriers and thereby stretch the gripped margin of the upper, This downward movement of the nippcrs is rendered a yielding one by means of interposed springs.

llhe second working; stage begins with the second depression of the treadle. The pincer carriers with their wiper plates and pinrers are rocked inward by a, trame moving upward, and moves uinlrrucath the sole. Al the end of this stage the hammer drivers carried by the pincer supports come into operation and drive the tacks, previously inserted in a suitalile manner into corresponding holes, into the marginal part of the upper and the insole.

At the third depression oi the treadlc. the third working stage r-omnuuiecs. "lhe liame imparting the rockingmovement to the pincer carriers and pinccrs is lowered and the carriers are drawn oulv-Jard by springs into their normal lHlFilllllll. lhe pinc r l'rame 1' *s again so that the side pinz-ers are again opened while the lack drivers are put in gear l'or the new operation. so that the machine is brought back to its initial position. ll then remains only to open the toe pineers by raising their hand lcvciz. and to swing hacl: the holder whi h retains the last in order to release the pulled over shoe.

The machine rompri s the following arrangements: The drivii'ig shalt is journaled in the machine frame 1 and carries the belt-pulh y l. provided with the clutch 3. and the disengaging gear. The latter is act dated by a treadlefi and works with wedge plane 6 against a wcdoe. plane 7 of a box thereby connecting the belt pulley with the cou 'iling fastened on the driving shaft 2 and simultaneously disengaging; by means oi" the rack and arm 30 the roller 12 'ilaced on the lever ill from one of the notches 13, 13", 13"

of the disk 14'. When the treadle is released the roller 12 slides upon the periphery oi the disk. 1 1 until it automatically engages with the next of the llOtCl'lQS l3, 13 or 13 The intermittent rotary movement thus ell'ected istransmitted to the cam disk 15 on the end of: the shaft, the said cam disk having a cam groove 16 for moving the pinecrlirame a, a cam groove 1'7 for moving the pulling over frame?) and am its circum lrrence a recess 18 for actuating the nail driving frame 6 These detailed arrangements will be hereinafter" separately dcscribed. i

The Zest supgvorziy lo hold the last the machine frame 1 is provided with a table like pa rt 19 upon which the toe rest 20 and the heel-supportingpscirewfQl are adjustably arranged. .z'ltlhe rear the last is held by a heel support 22 adjustable in the vertical and horizontal direction by a clamp 23 and a toothed rack 24 respectively. The toothed rack 24; is suitably adjusted by means of the pinion and bandlcver 2(3 and held in position by the pawl. Q'Fand the pawl lever During; the pullihgover operation the shoe is held in place'li y a loop 29 on the lever 30 pivoted in the machine frame, the said loop being placed over the ball of the last.

T710 yam/er .rlmririwlhe pincers grasp the upper and stretch it and while moving downward rock toward each other together with their carriers under the insole and hold the upper iiast until the nail drivers llkO- wisc mounl ed in the carriers have driven in the taclv's and all, fn rts ot the niachi e return to their normal position. The pincers are placed on their pincer carriers, the toe pineers on the pincer support (Z and the side pinccrs on. the pincer carriers 0. The pincer carrier :11 rests vertically revoluble on the pivots ill oi the ln'achels 32 fixed on the machine frame '1. The pincer carriers 6 are likewise vertically revoluble and rest upon the pivots 33.

The side pincer carriers inay be dillerently adjusted with relation to the carrier d by the .iollowingr arrangement: The pivots 33 are provided with sockets 3i engaging by an external screw thread with a female socket 35 in the machine -frame. On the pivots 33 are toothed wheels 36 fastened to the sockets 34. The teeth of the toothed 'wheels 36 gear with a rack 37 movably arranged in the rear of the iii-whine and actuated by a pinion 88. The latter is shsi'iended in the bearing; 30 on the pi vots 4-0 and revolved by the hand lever ll. The socket pairs 34 and 35 are reversely threaded on either side of the machine. 13} moving the lever 41 in either direction t ie side pincer carriers 0 are moved laterally toward or away from the toe pincer.

For moving the side pincers uniformly relative to the projecting edges of the upper screw nuts 42 and 43 are arranged upon the threaded parts of the pivots 33 which adjust the side pincers against the tension of the springs 44. To'regulate the side pincers therefore the nuts 42 and 43 are used 'in combination with the springs 44;

The pincers therefore are movably supported in the pincer carriers (Z and e and have fixed jaws fand movable jaws g. The jaws f project from guide-blocks it provided with sleeves z and bear against the flat portions it of the pincer carriers d and 6. Beneath the guide blocks hsprings 45 are pro vided which tend to move said guide-blocks upward. The movable pincer jaw g is provided with a lever arm 46'and terminates in a segm ntal-gear engaging with a. rack bar 47 passing through the sleeve 2'. The rack bar is connected by means of the link 48 provided with a universal joint, with the plunger 49. This plunger passes through the pincer frame a which controlled by the cam 15 moves up and down in the guides 50 of the machine and lifts and lowers the link 48. Upon the plungers 49 springs 51 are mounted the tension of which may be regulated by adjusting the nut 52. The springs 51 render the movement of the rods 47, 48, 49 yielding so as to make the pull of the grippers elastic. The pincer frame a has a roller 53 operating within the groove 16 of the cam 15. This produces the following result. When the cam groove 16 causes the frame a to descend the rods 47, 48 and 49 are pulled down and by means of the gears 46 and 46, the pincers are first closed to grasp the upper (see Figs. 13 and 14) then by the continued descent of the frame (I. the sleeve 6- moves with the guide block it also downward under the tension of the springs 51 thereby stretching the upper, the pull being a yielding one owing to the said springs (Fig. 8). In the third working stage the cam roller 53 and frame a and therefore also the rods 47 48 and 49 rise, the pincers with the sleeves '21 and guide blocks it are moved outward and the pincer jaws open.

To effect the closing of the toe-pincers in their normal position the segment 46 of the movable jaw is suitably set in relation to the bar 47, being under spring tension. The plunger 49 of the toe pincers rests upon the lever 54 fulcrumed at 55. On lifting this lever the jaws f, g of the toe pincers are opened by means of the rods 47, 48 and 49. The lever 54 is yieldingly held by the spiral spring 56. The actuation of the pincers by cam grooves in the three different working stages is illustrated. in 7, 9 and 12.

The rocking 0f the pincer carriers in order to pull the edge of the upper 0U6I1 the last i and the ins0Ze.The pincers having grasped 1 and drawn downward the upper (see the I groove 16 in the normal position Fig. 7 and in the first working stage Fig. 9) the pincer carriers d c are to be moved underneath the 59 against inclined shoulders 60 of the car- 4 riers (Z c, the said rollersbeing arranged on bolts (51 which may be adjusted by the set screws 62 in order to move the carriers inward to a greater or less degree. The springs 63 on the frame I) draw the carriers (Z a into their position of rest when the frame 79 descends The operation of the device is as follows: The frame 6 rises upward during the second working stage (Figs. 10-12) and presses against the inclined shoulders 60 and rocks' the pincer carriers which are fulcrumed on the bolts 31 and 33 inward. The upper being fastened't o the insole in a manner hereinafter described, the frame 7) moves downward and the springs 63 withdraw the pincer carriers to normal position.

The too/sing mc0ham'sm.1n the upper plate 7!: of the carriers d e are arranged tack receiving holes and there is fitted in these holes the drivers 64 fixed on the nail blocks 65. The latter are guided by'the rods 66 in the pincer carriers and. are connected by bars 67 with the tack driving frame 0. The block may be adjusted 'by the set screws 68. The tack driving frame 0 slides in guides 69 of the frame 1 and its roller 70 bears on the periphery 71. of the cam 15. The roller 70 enters into the recess 18 and permits the operation of the tacking device. eneath the frame 0 and the guide plate 0 springs 72 are adjustably arranged on a shaft and may be put under suitable tension. by the regulating device 73. These springs act upon the arm 74 which presses by means of the link 75 against the lower part 7 6 of the guide plate 0 and force the said frame and its associated nail block upwardly to drive and seat the nails disposed in the block is. To render this action elastic the stop 77 is provided with springs 7 8. The tacking devices of all the pincers are identical, the movement of the cam and associated parts being shown at Fig. 12. I

Projections 79 on the pincer carriers d and (a guide the edge of the sole as the pincer carriers more inward, and these projections 79 may be adjusted according to the shape of the last.

The entireoperation of the machine will now be described with reference to the position of the cam 15 show: in Figs. 7, 9 and 12. I

In the position of rest the side grippers are open, and the toe-pincers closed. By lifting the hand lever 54 the toe pincer is openecl and the toe portion of the upp first grasped, whereupon the shoe is for down on the heel-supportine' screw is, so held by means of the stirrup that it stands in alinement with the machine. The loop 29 is lowered and by pressin down the treadle 5 previously brought to its normal position by the spring 80. the inclined surfaces 6, T of the clutch are engaged, the roller 12 released and the machine set in motion. The machine now performs the first working stage 2'. c. the cam 15 comes from. the position of rest (F'g. T) into the first position. of operation ll (Fig. 9) and the grooves 1t), 1'? and the recess l ier is ii of the cam 15 show the position illustratei 'r. F1 g. ll. T he frame (1 is thereliy moved dmvi Ward and the side-pincers closed. (the toe-- pincer being alread closed upon the release oi the hand lever and all th pincer-s stretch the upper. the last lies upon the toe support Ta l and heelecrevv and is hold fast hv the stirrups and 30. rollers 59 of the frame i) retain their position. as the gri ove 17 here rrlns concentri call r of the dirk (Figs. 7 mil 9).- ln the second depression of the treadle whereby the actuation h the inclined surfaces oi the Wedges (l, 7 and. the moving out of the roller 12 hr i'alling into the recesses 13, 13 .3" repeated. the 7) it; C211 and to 1 (11.110 swing: inwardly oy incanrs of the inc inecl shoulders; 0 the pincer carriers (Z and e. The roller 57 rum in the groove 1T 12) while the roller 51% of the pincer frame (I passes in its concentric path from the position ll into the position l ll. Thereby the inclination ol the pincer-carriers is ellected. whereupon the roller oi? the nail-driving frame 0, c enters; in the recess 18 of the cam 15 and the spring 72 pushes the nail-drivers upward to complete the tacking.

The last (lQplUSSlOll of the trcadle 5 causes the cam 15 to move from the position iii into the position l} which the normal position. The rolleri-i 5 3, ST and i l guii'led. l; v grooves-t i6 17 and reccse ill rrspecti\'cly more the pincer frame (1 up rd to open and to lift the sidepiucere and 1e 'l'ranus 7.

and c to bring the carriers; lHiiili l'roui the in cliiu'd do a. straight pwdtion and put the nailing apparatue under tlilw'iflll. lo re more the pulled over shoe. it 15% only necessary to hit the hat-l: the stirru I ll'hat I claim is 1. in a machine i the class: descri wl. pivoted pincer carriers, oi piuccrs elidahlv mounted in the pivoted carriers.

lover ml and to sum pincer f nieane l or wr-iitively tilting the carriers-1 and separate in; the pine-rm downward.

. I "ril cd.

,. l meant-1 for niov 2. in a machine oi the class (lee pivoted pincer-carricre. pincors mounted in the said carrii.

sliilhlilv I 1 relative to the pincer carriers, one vertically and movable j:1.s, "ache: slithihljv mounted ad ao 1.; the movable Jaws, teeth upon 1 .ing with the racks, and a vertically moving" part engaging the melts and adapted to close first the pincers and then to pull them down,

the nioi'ahle iavvs inter-cog rihecl, ole 1n incer carriers, pincersr or and movable jaws. racks slide. l adjflfitlll; the movable jaws. gear teeth upon the movable jaws intcrengaging With the re and a vertically moving part engagi 1;); the racks and adapted to el-. :0 first the pincers and then to pull them doom and springs hetvveen the vertically moving part and the slirlahle racks for yieldingly moving the pincers.

T. ln a machine 01" the clas pivoted pincer carriers 'u'ovd i clined, shoulders. pincera slitlaliilc in carriers a yoke mount d, ecliaceot rer carrier-e. and. movable relative to move the carriers upon their pivots and to lay the upper stretched by the ;)ineer&; upon the insole.

E3. in a machine of the class described, pivoted pincer :arriers provided with in cliucrl ehiiuilders. a yoke movable relative thereto" 'Motion rollers upon the yoke adjacent the 'arricr hould r.-a. and nice-inn for adjusti f the rollers upon the yolije against the iuclii'ied shoulderr; t the pivoted carriers,

fl. in a machine of the class described, a can] dish provided with a plurality of cam grooves. pivoted pincci carriere: having incliucd .-lioulder piuccrs carried l) and movable relative to the pincer carriers. a vertically moving part raiintroll-etl by one groove of the (ff' ll l'or moving the pinccrs relative to the pincer carrie'rw. and a vohc adjacent the inclined shouldixs of the pincer parriers and movable relative thereto and controlle'fl by another oi? said. cam grooven 'i'or tilting the said carrier upon their pivots. '10. in a machine of the class described pivoterl pincer corrierit. a grooved com. a l plurality of pincers carried by and mo 'nlile moving n st controlled mg all the pinco carriers, flll mans peiml eiiuai operatien of the tee pincer emlently of the cam groove. 1

11. in a machine of the class described Vertically IDO'viRg parts, pivoted pincer eerliQIS, a yoke adjacent the pincer carriers and movable relative thereto, incers slidahle in J the said carriers and connected to one of mere and Carrie 1 by *ies'ing par s and c s eonsaid verticallv ma ling warts nailin rods u 3 b C! U shchml n the ca mentioned in riers and the side pincei earner and resilient means tor holding the c est irame, 'pmcer Cflfllels eivoterl q V 3. iesihent means I01 holoiny' any carriers yieldingly spaced, and means ry the normal interval between the g cm eairiersa In machine of the class described, a frame, pincer carriers pivoted. upon the frame a resilient member adapted to hold the pincer carriers normal and yieldingly spaced, and means engaging the pivots pincer carriers.

lh .nmchine oi the class dQSCIlbECl, a

frame means mounted upon the frame for n9 lasts 0f various sizes pincer car- A upon the frame, means to very SE18 i .LQlfVitl. between the pincer carriers to correspond with the sizes 01 lasts, and re- 'ent means positioned to hold the pincer normally spaced at the prede J. in i/STVH l.

HEINRICH W ALTHER.

TEICHM'ANN,

adapted to vary the normal interval between 

